from flask import render_template, make_response, session, current_app, request, jsonify, g

from info.models import User, News, Category
from info.utils.common import user_login_data
from info.utils.response_code import RET
from . import index_blu
from info import redis_store, constants


@index_blu.route('/news_list')
def news_list():
    """
    获取新闻首页
    :return:
    """
    # 新闻参数获取
    cid = request.args.get('cid', 1)
    page = request.args.get('page', 1)
    per_page = request.args.get('per_page', 10)

    # 参数校验
    try:
        page = int(page)
        cid = int(cid)
        per_page = int(per_page)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.PARAMERR, errmsg='参数不全')
    # 查询数据并分页
    filters = [News.status == 0]
    if cid != 1:
        # 需要添加条件
        filters.append(News.category_id == cid)

    # 3.查询数据
    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, per_page, False)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg='数据查询错误')
    # 取到当前页的数据
    news_model_list = paginate.items
    total_page = paginate.pages
    current_page = paginate.page

    # 将模型对象列表转成字典列表
    news_dict_li = []
    for news in news_model_list:
        news_dict_li.append(news.to_basic_dict())

    data = {
        'total_page': total_page,
        'current_page': current_page,
        'news_dict_li': news_dict_li
    }
    return jsonify(errno=RET.OK, errmsg='OK', data=data)


@index_blu.route('/')
@user_login_data
def index():
    # # 获取当前用户的id
    # user_id = session.get('user_id', None)
    # # 通过id获取用户信息
    # user = None
    # if user_id:
    #     try:
    #         user = User.query.get(user_id)
    #     except Exception as e:
    #         current_app.logger.error(e)
    # # 右侧点击排行
    user = g.user
    news_list = None
    try:
        news_list = News.query.order_by(News.clicks.desc()).limit(constants.CLICK_RANK_MAX_NEWS)
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list if news_list else []:
        news_dict_list.append(news.to_basic_dict())
    # 查询分类数据，通过模板的形式渲染出来
    categories = Category.query.all()
    category_li = []
    for category in categories:
        category_li.append(category.to_dict())

    data = {
        "user_info": user.to_dict() if user else None,
        "news_dict_list": news_dict_list,
        'category_li': category_li
    }

    return render_template('news/index.html', data=data)


@index_blu.route('/favicon.ico')
def favicon():
    f = open('info/static/news/favicon.ico', 'rb')
    news_content = f.read()
    response = make_response(news_content)
    response.headers['Content-Type'] = 'image/ico'
    return response
